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  1. WiredTiger
  2. WT-3514

WT_SESSION.checkpoint: read timestamp 6373c older than oldest timestamp

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 3.5.12, WT3.0.0
    • Component/s: None
    • Labels:
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      Description

      If an application is using the stable_timestamp API correctly, then it should always be the case that oldest_timestamp <= stable_timestamp. However, a checkpoint first reads stable_timestamp and (sometime later) starts a transaction. During that interval, the oldest_timestamp could move forward, leading to this error.

      That appears to have happened in testing:

      http://build.wiredtiger.com:8080/job/wiredtiger-test-recovery-stress/510/console

      Checkpoint needs to prevent the oldest_timestamp moving forward until its transaction has started.

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            • Assignee:
              michael.cahill Michael Cahill
              Reporter:
              michael.cahill Michael Cahill
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              • Created:
                Updated:
                Resolved: